sched: Don't export sched_mc_power_savings on multi-socket single core system

Fix to prevent sched_mc_power_saving from being exported through sysfsfor multi-scoket single core system. Max cores should be always greater thanone (1). My earlier patch that introduced fix for not exporting'sched_mc_power_saving' on laptops broke it on multi-socket single coresystem. This fix addresses issue on both laptop and multi-socket singlecore system.Below are the Test results:

1. Single socket - multi-core Before Patch: Does not export 'sched_mc_power_saving' After Patch: Does not export 'sched_mc_power_saving' Result: Pass